LC68 series M1-MOPA laser marking machine

MOPA left view, front view, right view;

Standardized electrical circuit diagram, internationally renowned MOPA laser

Scanning galvanometer system, red light positioning system, 19 inch large screen display

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Fiber lasers have the following advantagesHigh conversion efficiency (light to light conversion efficiency exceeds)60%), low laser threshold; The structure is simple, the working substance is a flexible medium, and it is easy to use; High beam quality (easily accessible)diffraction-limited ); ! Laser output has multiple spectral lines and a wide tuning range (455-3500nm); ∀ Small size, light weight, good heat dissipation effect, long service life. However, due to its relatively low output power, its application range has been greatly limited. With the gradual maturity of double clad fiber and high-power semiconductor laser (LD) manufacturing technology, the output power of fiber lasers has been greatly improved, and their application range has also been greatly expanded. Ultra short pulse lasers with certain repetition rates, high energy, high peak power, and high beam quality have attractive application prospects in fields such as fiber optic communication, medical, military, and biology, and have become one of the current research hotspots.

At present,There are two main ways to obtain ultra short pulse lasers in optical fibers: Locking technology and Q adjustment technology.Mode-locked pulse fiber laserMainly utilizing various factors to control the oscillation inside the cavitylongitudinal modeBy modulating, when each longitudinal mode has a determined phase relationship and the phase difference between any adjacent longitudinal modes is constant, coherent superposition can be achieved to obtain ultra short pulses with pulse widths ranging from sub picosecond to sub femtosecond.Q-switched pulsed fiber laser is a device that inserts a Q-switch into the resonant cavity of the laser. By periodically changing the loss inside the cavity, it achieves pulsed laser output with a pulse width of up to 10-9 seconds.By using Q-switching or mode locking techniques, extremely high peak power can be obtained, but a single Q-switching ormode-locked laserThe obtained pulse energy is often very limited, which limits its application range.

In order to further increase the pulse energy, amplification technology is required,The main oscillator power amplifier (MOPA) structure is adopted. Obtained using this structure in optical fibershigh energyThe wavelength and repetition rate of the pulsed laser and the seed light source are the same, and the shape and width of the time-domain pulse are almost unchangedSelecting a seed light source with a certain repetition rate and pulse width as the main oscillator, the required high-energy pulse laser output can be obtained through power amplification. Therefore, adopting the main oscillation power amplification technology to achieve high pulse energy and high average output power has become an ideal choice.

Main oscillator power amplifier, abbreviated as MOPA,It is to combine the seed signal light with high beam quality and the pumpLight source By coupling into a double clad fiber in a certain way for amplification, high-power amplification of the seed light source can be achieved. Its prominent feature is that the main function of the master oscillator is to generate high-quality seed light, and the output power can be large or small, so the output light is relatively easy to achieve the required time-domain and frequency-domain characteristics and maintain good beam quality; The main function of the power amplification part is to amplify the seed light, ensuring high beam quality of the output light while achieving high-power and high-energy output. It combines the advantages of the good pulse characteristics of low-power seed sources and the high-power amplification characteristics of double clad amplifiers.

1. Laser optical characteristic parameter table

2. General characteristic parameter table

Characteristics and Applications of MOPA Laser Marking Machine:

1. Application of surface stripping of alumina sheet

The current oneelectronic productThe thinner and thinner it becomes,Many mobile phones, tablets, and computers use lightweight aluminum oxide as the outer shell of their productsWhen using a Q-switched laser to mark the conductive potential on thin aluminum plates, it is easy to cause material deformation, resulting in a "convex hull" on the back, which directly affects the aesthetic appearance. By using MOPA laser with smaller pulse width parameters, the material is less likely to deform and the texture is more delicate and bright white. This is because MOPA laser uses a small pulse width parameter to shorten the time the laser stays on the material, and has enough energy to remove the anode layer. Therefore, for the processing of stripping the anode on the surface of thin alumina plates, MOPA laser is a better choice.

2. Application of anodized aluminum for blackening

Use laser to mark black trademarks, models, text, etc. on the surface of anodized aluminum material,This type of application has gradually been widely used by electronic manufacturers such as Apple, Huawei, ZTE, Lenovo, Meizu, etc. in the past two years for marking trademarks, models, etc. with black marks on the outer shell of electronic products.For such applications, currently only MOPA lasers can process them. Due to the wide pulse width and pulse frequency adjustment range of MOPA laser, using narrow pulse width and high frequency parameters can mark black effects on the material surface. Different parameter combinations can also mark different grayscale effects.

3. Precision machining applications in electronics, semiconductors, and ITO

In precision processing such as electronics, semiconductors, and ITO, fine line drawing applications are often required. Due to its inherent architecture, Q-switched lasers are unable to adjust pulse width parameters, making it difficult to achieve precise line drawing. MOPA laser, due to its flexible adjustment of pulse width and frequency parameters, can not only make the drawn lines fine, but also make the edges appear smooth and not rough.

For more product updates and inquiries, please call (WeChat):

086-133 9083 3835086-133 9083 3836；

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Packaging and shipping:

1. Install sponge and other filling materials to prevent dust stamping;

2. Export grade wooden packaging, caring more about your baby;

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